Constant velocity joint for vehicle

A constant velocity joint for a vehicle, the constant velocity joint comprising:

• an axle housing fixed to a knuckle by a hub bearing;
• a joint assembly inserted into an inner diameter portion of the axle housing and configured to transmit power from a shaft to the axle housing through a plurality of joint balls;
• an extension portion extended from an end portion of the axle housing in a radial direction of the axle housing, wherein the extension portion is disposed on an inward side of a vehicle body of the vehicle and configured to provide a pressing force to an inner race of the hub bearing in an axial direction of the axle housing;
• and
• a boot having one side configured to:
• surround an outer side of the extension portion,
• coupled to the extension portion, and
• form a restraining force between the extension portion and the boot in the axial direction,
• wherein the extension portion has a protrusion having an outer diameter greater than a diameter of an end portion of the inner race on the inward side of the vehicle body,
• wherein the boot includes:
• a first contact portion configured to contact an end portion of the extension portion on the inward side of the vehicle body,
• a second contact portion connected to the first contact portion and configured to contact an outermost side of the protrusion, and
• a third contact portion connected to the second contact portion and configured to contact the protrusion on an outward side of the vehicle body to form an inner groove into which the protrusion is inserted, and
• wherein:
• the protrusion has a first inclined portion formed on the outward side of the vehicle body,
• an outer diameter of the first inclined portion gradually decreases toward the outward side of the vehicle body, and
• the third contact portion of the boot is formed in parallel with the first inclined portion.